a. Describe Walmart's cash flows from operations for the period. Is the firm generating positive cash flow? How has this cash flow changed over time? b. Is Walmart investing cash in its business? How has Walmart been financing its operations? c. How would you describe Walmart's pattern of net cash flows for the period? WalMart Statements of Cash Flow In Millions of USD (except for per share item 12 Months ended \begin{tabular}{lrrrr} & 1/31/2013 & 1/31/2012 & 1/31/2011 & 1/31/2010 \\ \cline { 2 - 5 } Net Income & 12,731.00 & 11,284.00 & 11,231.00 & 10,267.00 \\ Depreciation and Non-cash Items & 6,470.00 & 6,308.00 & 4,720.00 & 4,265.00 \\ Deferred Taxes & (8.00) & 89.00 & (129.00) & 263.00 \\ Changes in Working Capital & 1,161.00 & 2,271.00 & 2,419.00 & 249.00 \\ \cline { 2 - 5 } Cash from Operating Activities & 20,354.00 & 19,952.00 & 18,241.00 & 15,044.00 \\ & & & & \\ Capital Investment Expenditures & (15,670.00) & (14,463.00) & (14,186.00) & (12,351.00) \\ Cash from Investing Activities & (15,670.00) & (14,463.00) & (14,186.00) & (12,351.00) \\ & & & & \\ Interest and Financing Cash Flows & (334.00) & (227.00) & (349.00) & 113.00 \\ Total Cash Dividends Paid & (3,586.00) & (2,802.00) & (2,511.00) & (2,214.00) \\ lssuance (Retirement) of Stock, Net & (7,691.00) & (1,718.00) & (3,580.00) & (4,549.00) \\ Issuance (Retirement) of Debt, Net & 4,477.00 & (92.00) & 4,018.00 & 4,041.00 \\ Cash from Financing Activities & (7,134.00) & (4,839.00) & (2,422.00) & (2,609.00) \\ & & & & \\ Foreign Exchange Effects & 252.00 & 97.00 & (101.00) & 205.00 \\ Net Change in Cash & (2,198.00) & 747.00 & 1,532.00 & 289.00 \end{tabular}